The KIRO TV station from Washington state has put together a segment in which drivers' skills are tested while they are under the influence of marijuana.

The program has used volunteers and tested their driving abilities after smoking different amounts of pot. Three people, of different ages and genders appear in the program, while a trainer sits beside them, ready to use the additional breaks whenever needed.

One of the participants is a regular user and medical marijuana patient, while the other two are recreational smokers. When the pot levels in their blood are at double, even triple the legal limit, they are all OK to drive.

As they consume the substance in larger quantities, they start driving slower, losing control of the vehicle and failing to properly navigate the course.